US20170266871A1 - Seam construction using radio frequency welding and tape - Google Patents
Seam construction using radio frequency welding and tape Download PDFInfo
- Publication number
- US20170266871A1 US20170266871A1 US15/460,886 US201715460886A US2017266871A1 US 20170266871 A1 US20170266871 A1 US 20170266871A1 US 201715460886 A US201715460886 A US 201715460886A US 2017266871 A1 US2017266871 A1 US 2017266871A1
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- US
- United States
- Prior art keywords
- seam
- tape
- exemplary
- panels
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 title description 9
- 239000000463 material Substances 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 18
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 16
- 239000004814 polyurethane Substances 0.000 claims description 11
- 239000004800 polyvinyl chloride Substances 0.000 claims description 9
- -1 Polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims 10
- 238000012360 testing method Methods 0.000 description 29
- 206010003402 Arthropod sting Diseases 0.000 description 12
- 239000004744 fabric Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
- B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being multi-layered
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
- B29C65/5028—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being textile in woven or non-woven form
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- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
- B29C65/8215—Tensile tests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C65/82—Testing the joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
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- B29C66/0384—Covering the joint by a coating material the coating material being in tape, strip or band form
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/729—Textile or other fibrous material made from plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
- B29C66/7318—Permeability to gases or liquids
- B29C66/73185—Permeability to gases or liquids non-permeable
- B29C66/73186—Permeability to gases or liquids non-permeable to gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
- B29C66/7318—Permeability to gases or liquids
- B29C66/73185—Permeability to gases or liquids non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
- B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
- A41D27/24—Hems; Seams
- A41D27/245—Hems; Seams made by welding or gluing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/62—Stitching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
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Abstract
Description
- The present application claims benefit of priority with U.S. Provisional Application No. 62/310,326, filed Mar. 18, 2016, which is hereby incorporated by reference.
- Embodiments of the present invention generally relate to seam construction, and more specifically to a seam construction using radio frequency welding with a tape finished construction.
- Radio frequency (RF) welding is a method for joining thin sheets of certain plastics with chemical dipoles together. Some of these plastic materials include thermoplastics such as polyvinylchloride (PVC), polyurethane (PU), thermoplastic polyurethane (TPU), thermoplastic elastomers (TPE), etc. The materials can be heated with high frequency electromagnetic waves. The method uses high frequency, usually between 13 and 120 MHz, electromagnetic energy to fuse the materials. As such, RF welding may also be known as high frequency (HF) welding or dielectric welding. Generally, a rapidly alternating electric field is set up between two metal welding plates or bars, where two pieces of the material are placed. The electric field causes the polar molecules found in the material to oscillate and orient themselves with respect to the field. The energy generated by this process causes a temperature increase (heat) which results in melting of the material. The welding plates or bars are then pressed together, forming a weld between the two pieces.
- Because RF welding is better than conventional stitching used in constructing seams, RF welding has often been used to construct seams for various types of products, including clothing garments, bags, tents, etc., just to name a few examples. It is advantageous, therefore, to construct seams that are strong, air tight, and water tight.
- However, the quality of welds or bonds formed by the RF welding process is usually a result of a complicated combination of machine parameters (power output, frequency), the temperature profile and bar pressure, and the material type and thickness. Achieving a strong and consistently leak-proof seal using RF welding can be difficult.
- Therefore, it would be highly beneficial to provide systems and methods for seam construction that provide seams that are consistently strong, air tight, and water tight.
- Provided herein are embodiments of methods for seam construction that provide seams that are consistently strong, air tight, and water tight, and more specifically methods for seam construction using the combination of RF welding and tape finish. The methods of constructing a consistently strong, air tight and water tight seam may include cutting a sheet of material made of a selected material into two panels, sealing the two panels at a respective selected edge of each of the two panels using an ultrasonic machine, thus forming a seam, overlaying the seam with a section of tape made of the selected material, and sealing the section of tape and the seam using a radio frequency (RF) welding machine.
- This summary and the following detailed description are merely exemplary, illustrative, and explanatory, and are not intended to limit, but to provide further explanation of the invention as claimed. Additional features and advantages of the invention will be set forth in the descriptions that follow, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description, claims and the appended drawings and support materials.
- Understanding this invention will be facilitated by the following detailed description of the preferred embodiments considered in conjunction with the accompanying drawings, in which like numerals refer to like parts. Note, however, that the drawings are not drawn to scale.
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FIG. 1 illustrates an exemplary flowchart of a seam construction process according to an embodiment of this invention. -
FIG. 2 illustrates an exemplary top rear view of a seam for panels of a 70D material according to an embodiment of this invention. -
FIG. 3 illustrates an exemplary perspective rear view of a seam for panels of a 70D material according to an embodiment of this invention. -
FIG. 4 illustrates an exemplary top front view of a seam for panels of a 70D material according to an embodiment of this invention. -
FIG. 5 illustrates an exemplary perspective front view of a seam for panels of a 70D material according to an embodiment of this invention. -
FIG. 6 illustrates an exemplary top rear view of a seam for panels of a 20D material according to an embodiment of this invention. -
FIG. 7 illustrates an exemplary perspective rear view of a seam for panels of a 20D material according to an embodiment of this invention. -
FIG. 8 illustrates an exemplary top front view of a seam for panels of a 20D material according to an embodiment of this invention. -
FIG. 9 illustrates an exemplary perspective front view of a seam for panels of a 20D material according to an embodiment of this invention. -
FIG. 10 illustrates exemplary results of an exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material according to an embodiment of this invention. -
FIG. 11 illustrates exemplary results of an exemplary test using the process of the invention on a 70D material according to an embodiment of this invention. -
FIG. 12 illustrates exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material according to an embodiment of this invention. -
FIG. 13 illustrates exemplary results of another exemplary test using the process of the invention on a 70D material according to an embodiment of this invention. -
FIG. 14 illustrates exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material according to an embodiment of this invention. -
FIG. 15 illustrates exemplary results of another exemplary test using the process of the invention on a 70D material according to an embodiment of this invention. -
FIG. 16 illustrates exemplary results of an exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material according to an embodiment of this invention. -
FIG. 17 illustrates exemplary results of an exemplary test using the process of the invention on a 20D material according to an embodiment of this invention. -
FIG. 18 illustrates exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material according to an embodiment of this invention. -
FIG. 19 illustrates exemplary results of another exemplary test using the process of the invention on a 20D material according to an embodiment of this invention. -
FIG. 20 illustrates exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material according to an embodiment of this invention. -
FIG. 21 illustrates exemplary results of another exemplary test using the process of the invention on a 20D material according to an embodiment of this invention. -
FIG. 22 illustrates a chart showing the results of the exemplary tests ofFIGS. 10-21 according to an embodiment of this invention. -
FIG. 23A illustrates an exemplary front view of a jacket according to an embodiment of this invention. -
FIG. 23B illustrates an exemplary back view of a jacket according to an embodiment of this invention. -
FIG. 24 illustrates an exemplary perspective view of a rucksack according to an embodiment of this invention. -
FIG. 25 illustrates an exemplary top view of a sleeping bag according to an embodiment of this invention. -
FIG. 26 illustrates an exemplary perspective view of a tent according to an embodiment of this invention. - The drawings, support materials, and related descriptions of the embodiments have been simplified to illustrate elements that are relevant for a clear understanding of these embodiments, while eliminating various other elements found in conventional seam construction and RF welding methods. Those of ordinary skill in the art may thus recognize that other elements and/or steps are desirable and/or required in implementing the embodiments that are claimed and described. But, because those other elements and steps are well known in the art, and because they do not necessarily facilitate a better understanding of the embodiments, they are not discussed. This disclosure is directed to all applicable variations, modifications, changes, and implementations known to those skilled in the art. As such, the following detailed descriptions are merely illustrative and exemplary in nature and are not intended to limit the embodiments of the subject matter or the uses of such embodiments. As used in this application, the terms “exemplary” and “illustrative” mean “serving as an example, instance, or illustration.” Any implementation described as exemplary or illustrative is not meant to be construed as preferred or advantageous over other implementations. Further, there is no intention to be bound by any expressed or implied theory presented in the preceding background of the invention, brief summary, or the following detailed description.
- In the following description and in the figures, like elements are identified with like reference numerals. The use of “e.g.,” “etc,” and “or” indicates non-exclusive alternatives without limitation, unless otherwise noted. The use of “including” or “includes” means “including, but not limited to,” or “includes, but not limited to,” unless otherwise noted.
- As used herein, the term “and/or” placed between a first entity and a second entity means one of (1) the first entity, (2) the second entity, and (3) the first entity and the second entity. Multiple entities listed with “and/or” should be construed in the same manner, i.e., “one or more” of the entities so conjoined. Other entities may optionally be present other than the entities specifically identified by the “and/or” clause, whether related or unrelated to those entities specifically identified. Thus, as a non-limiting example, a reference to “A and/or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including entities other than B); in another embodiment, to B only (optionally including entities other than A); in yet another embodiment, to both A and B (optionally including other entities). These entities may refer to elements, actions, structures, steps, operations, values, and the like.
- Referring now to the figures, wherein like reference numerals designate identical or corresponding parts throughout the several views and embodiments, methods and processes in accordance with the present invention are illustrated in
FIGS. 1 to 26 . - Referring to
FIG. 1 , an exemplary flowchart of aprocess 100 according to some embodiments of the invention is illustrated. In some exemplary operations, the steps for constructing a consistently strong, air tight, and water tight seam may generally include cutting a sheet of material made of a selected material into panels (Step 110), sealing the panels together at respective edges using an ultrasonic sealing machine (Step 120), forming a seam. The new seam is then overlaid with a section of a fabric tape, which has been coated with polyurethane (PU), thermoplastic polyurethane (TPU), Polyvinyl Chloride (PVC), Ethylene-Vinyl Acetate (EVA), Polytetrafluoroethylene (PTFE), or a combination thereof, or with other suitable material (Step 130). An area adjacent to both sides and along the length of the seam may also be coated with polyurethane (PU), thermoplastic polyurethane (TPU), Polyvinyl Chloride (PVC), Ethylene-Vinyl Acetate (EVA), Polytetrafluoroethylene (PTFE), or a combination thereof, or with other suitable material. The tape and the seam are then sealed using an RF welding machine (Step 140). - In
Step 110, a sheet of a selected material may be cut into panels of desired shapes and sizes, based on the specifications of the desired products. The products may include, for example, jackets, pants, back packs, duffle bags, dry bags, tents, sleeping bags, and so on, as shown, for example, inFIGS. 23-26 . Any conventional fabric cutting machine known in the art may be used for the cutting. - Once the sheet of the selected material has been cut into panels, and the edges that need to be sealed have been determined, in
Step 120, in some embodiments, the edges may be sealed together using an ultrasonic sealing machine. As a result, a new seam is formed at the respective edges of the panels.FIGS. 2 and 3 illustrate respectively an exemplary top rear view and an exemplary perspective rear view of two sealed70D fabric panels seam 200.FIGS. 6 and 7 illustrate respectively an exemplary top front view and an exemplary perspective front view of the sealed20D fabric panels seam 600. Although examples of 20D and 70D materials are illustrated, any 100D and lighter, for example, as low as 5D material may be used. - Any conventional ultrasonic sealing machine known in the art may be used. With ultrasonic sealing, the heat required for melting is generated inside the material, for example, not by heat input from the outside as is the case with heat sealing.
- In
Step 130, in some embodiments, a tape made of the same material as the material of the fabric panels may be used. The tape may be coated with polyurethane (PU), thermoplastic polyurethane (TPU), Polyvinyl Chloride (PVC), Ethylene-Vinyl Acetate (EVA), Polytetrafluoroethylene (PTFE), or a combination thereof. Other suitable coating materials may also be used. The tape may be coated on the side that will be coupled, or bonded, to the seam, as described below. - An area adjacent to both sides and along the length of the seam formed in
Step 120 may also be coated with polyurethane (PU), thermoplastic polyurethane (TPU), Polyvinyl Chloride (PVC), Ethylene-Vinyl Acetate (EVA), Polytetrafluoroethylene (PTFE), or a combination thereof. Other suitable coating materials may also be used. The coated tape, or more specifically, a section of the tape, may then be overlaid over the coated seam. For example,FIG. 4 illustrates anexemplary tape section 400overlaying seam 200.FIG. 8 illustrates anexemplary tape section 800overlaying seam 600. - In
Step 140, in some embodiments, the tape and the seam are then sealed using an RF welding machine. Any conventional RF welding machine known in the art may be used. As a result, a strong, air tight (airproof) and water tight (waterproof) seam is constructed.FIGS. 4 and 5 illustrate an exemplary top front view and an exemplary perspective front view theseal 200 andtape 400 welded (or sealed, or bonded) using a conventional RF welding machine.FIGS. 8 and 9 illustrate an exemplary top front view and an exemplary perspective front view theseal 600 andtape 800 welded (or sealed, or bonded) using a conventional RF welding machine. - Testing has been performed to show the superior strength of seams constructed using the process of the invention, as compared to seams constructed using stitching.
FIGS. 10-22 illustrate exemplary test results performed using 20D and 70D materials. The tests include, for example, Breaking Force, Breaking Strength, Elongation at Break, Elongation at Rupture, Breaking Time, Bursting Strength, Break-off Force, Tensile Strength, Tensile Rate, Break-off Strength, Nominal Tensile Strength, and Initial Modulus. -
FIG. 10 illustrates, according to some embodiments, exemplary results of an exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material. -
FIG. 11 illustrates, according to some embodiments, exemplary results of an exemplary test using the process of the invention on a 70D material. -
FIG. 12 illustrates, according to some embodiments, exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material. -
FIG. 13 illustrates, according to some embodiments, exemplary results of another exemplary test using the process of the invention on a 70D material. -
FIG. 14 illustrates, according to some embodiments, exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 70D material. -
FIG. 15 illustrates, according to some embodiments, exemplary results of another exemplary test using the process of the invention on a 70D material. -
FIG. 16 illustrates, according to some embodiments, exemplary results of an exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material. -
FIG. 17 illustrates, according to some embodiments, exemplary results of an exemplary test using the process of the invention on a 20D material. -
FIG. 18 illustrates, according to some embodiments, exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material. -
FIG. 19 illustrates, according to some embodiments, exemplary results of another exemplary test using the process of the invention on a 20D material. -
FIG. 20 illustrates, according to some embodiments, exemplary results of another exemplary test using stitching (e.g., 8 stiches per inch) on a 20D material. -
FIG. 21 illustrates, according to some embodiments, exemplary results of another exemplary test using the process of the invention on a 20D material. -
FIG. 22 illustrates, according to some embodiments, a chart showing the results of the exemplary tests ofFIGS. 10-21 . -
FIGS. 23-26 illustrate, according to some embodiments, exemplary uses of the invention process on exemplary products. It should be noted that these are only exemplary products shown for illustration purpose only, and the invention process is not limited to these products.FIG. 23A illustrates anexemplary front view 2300 of a jacket.FIG. 23B illustrates anexemplary back view 2310 of a jacket. Theexemplary seams numeric labels -
FIG. 24 illustrates, according to some embodiments, anexemplary perspective view 2400 of a rucksack or backpack. Theexemplary seams 2410 shown in dark, bold lines may be formed using the process of the invention. Note that although thenumeric label 2410 is shown pointing to respective exemplary seam, other seams shown in dark, bold lines may be formed using the process of the invention. -
FIG. 25 illustrates, according to some embodiments, an exemplarytop view 2500 of a sleeping bag. Theexemplary seams 2510 shown in dark, bold lines may be formed using the process of the invention. Note that although thenumeric label 2510 is shown pointing to respective exemplary seam, other seams shown in dark, bold lines may be formed using the process of the invention. -
FIG. 26 illustrates, according to some embodiments, anexemplary perspective view 2600 of a tent. Theexemplary seams 2610 shown in dark, bold lines may be formed using the process of the invention. Note that although thenumeric label 2610 is shown pointing to respective exemplary seam, other seams shown in dark, bold lines may be formed using the process of the invention. - The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (20)
Priority Applications (4)
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US15/460,886 US10751948B2 (en) | 2016-03-18 | 2017-03-16 | Seam construction using radio frequency welding and tape |
US16/927,989 US20210039325A1 (en) | 2016-03-18 | 2020-07-14 | Seam construction using radio frequency welding and tape |
US17/569,359 US20220203625A1 (en) | 2016-03-18 | 2022-01-05 | Seam construction using radio frequency welding and tape |
US18/137,420 US20240123690A1 (en) | 2016-03-18 | 2023-04-20 | Seam construction using radio frequency welding and tape |
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US201662310326P | 2016-03-18 | 2016-03-18 | |
US15/460,886 US10751948B2 (en) | 2016-03-18 | 2017-03-16 | Seam construction using radio frequency welding and tape |
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US16/927,989 Continuation US20210039325A1 (en) | 2016-03-18 | 2020-07-14 | Seam construction using radio frequency welding and tape |
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US20170266871A1 true US20170266871A1 (en) | 2017-09-21 |
US10751948B2 US10751948B2 (en) | 2020-08-25 |
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US16/927,989 Abandoned US20210039325A1 (en) | 2016-03-18 | 2020-07-14 | Seam construction using radio frequency welding and tape |
US17/569,359 Abandoned US20220203625A1 (en) | 2016-03-18 | 2022-01-05 | Seam construction using radio frequency welding and tape |
US18/137,420 Pending US20240123690A1 (en) | 2016-03-18 | 2023-04-20 | Seam construction using radio frequency welding and tape |
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US16/927,989 Abandoned US20210039325A1 (en) | 2016-03-18 | 2020-07-14 | Seam construction using radio frequency welding and tape |
US17/569,359 Abandoned US20220203625A1 (en) | 2016-03-18 | 2022-01-05 | Seam construction using radio frequency welding and tape |
US18/137,420 Pending US20240123690A1 (en) | 2016-03-18 | 2023-04-20 | Seam construction using radio frequency welding and tape |
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US (4) | US10751948B2 (en) |
EP (1) | EP3405052A4 (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11147195B2 (en) | 2018-06-02 | 2021-10-12 | Merakai, LLC | Faraday enclosure apparatus and method of manufacturing same |
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US4824498A (en) * | 1987-07-09 | 1989-04-25 | James River Corporation | Strippalble sponge cushion underlay for a surface covering, such as carpeting |
US8741412B2 (en) * | 2010-11-22 | 2014-06-03 | Tanakorn Wangbunyen | Seam and seam tape |
US9139352B2 (en) * | 2014-02-07 | 2015-09-22 | Yeti Coolers, Llc | Insulating container |
Family Cites Families (5)
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US3146141A (en) * | 1961-10-26 | 1964-08-25 | Dow Chemical Co | Method and apparatus for employing radio frequency and ultrasonic oscillatory energyin uniting thermoplastic materials |
US6716778B1 (en) | 1997-10-01 | 2004-04-06 | Martin Hottner | Seam joining a waterproof laminate with textile layer made of multi-component yarns |
US7754037B2 (en) | 2006-01-20 | 2010-07-13 | Tai-Kuang Wang | Manufacturing method for a seamless hat |
US8435617B2 (en) * | 2006-08-17 | 2013-05-07 | W. L. Gore & Associates, Inc. | Stitchless seam system for joining laminates |
US7975633B2 (en) | 2008-06-27 | 2011-07-12 | Miller Weldmaster Corporation | Bi-directional seaming machine |
-
2017
- 2017-03-16 US US15/460,886 patent/US10751948B2/en active Active
- 2017-03-16 EP EP17767542.8A patent/EP3405052A4/en active Pending
- 2017-03-16 WO PCT/US2017/022757 patent/WO2017161146A1/en active Application Filing
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2020
- 2020-07-14 US US16/927,989 patent/US20210039325A1/en not_active Abandoned
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2022
- 2022-01-05 US US17/569,359 patent/US20220203625A1/en not_active Abandoned
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2023
- 2023-04-20 US US18/137,420 patent/US20240123690A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4824498A (en) * | 1987-07-09 | 1989-04-25 | James River Corporation | Strippalble sponge cushion underlay for a surface covering, such as carpeting |
US8741412B2 (en) * | 2010-11-22 | 2014-06-03 | Tanakorn Wangbunyen | Seam and seam tape |
US9139352B2 (en) * | 2014-02-07 | 2015-09-22 | Yeti Coolers, Llc | Insulating container |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11147195B2 (en) | 2018-06-02 | 2021-10-12 | Merakai, LLC | Faraday enclosure apparatus and method of manufacturing same |
US11547029B2 (en) | 2018-06-02 | 2023-01-03 | Merakai, LLC | Faraday enclosure apparatus and method of manufacturing same |
Also Published As
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EP3405052A1 (en) | 2018-11-28 |
US20240123690A1 (en) | 2024-04-18 |
US10751948B2 (en) | 2020-08-25 |
EP3405052A4 (en) | 2019-11-20 |
US20210039325A1 (en) | 2021-02-11 |
WO2017161146A1 (en) | 2017-09-21 |
US20220203625A1 (en) | 2022-06-30 |
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